I need help with number 5

4. What mass of aluminum hydroxide are needed to decompose in order to produce 65.0L of water at STP according to the following equation? Al(OH), AI,O, H20 5. How many liters of propane(CH) are needed to react with 15.2 liters of oxygen at STP in order to produce water and carbon dioxide? CH, + O, H2O + _CO 6. How many grams of barium chloride are produced when 1.25 x 104 molecules of HCL reacts with barium according to the following equation? Word equation: Formula equation: (Must be balanced!)